要使用Apache Ignite REST API与Ignite集群进行交互，首先需要启动Ignite集群，并确保REST API已启用。以下是一个包含代码示例的解决方法：

1. 启动Ignite集群并启用REST API 在Ignite配置文件中，确保启用了REST API。可以通过在配置文件中添加以下行来启用REST API：

   
       ...
       
       ...
   
   

   然后使用以下代码启动Ignite集群：

   Ignition.start("ignite-config.xml"); // 替换为你的Ignite配置文件路径
   

2. 通过REST API读取和写入数据 使用HTTP POST请求发送数据写入请求，示例如下：

   import org.apache.http.client.HttpClient;
   import org.apache.http.client.methods.HttpPost;
   import org.apache.http.entity.StringEntity;
   import org.apache.http.impl.client.HttpClientBuilder;
   
   public class IgniteRestApiExample {
   
       public static void main(String[] args) throws Exception {
           // 发送写入数据请求
           String url = "http://localhost:8080/ignite?cmd=put&cacheName=myCache&key=myKey&val=myValue";
           HttpClient client = HttpClientBuilder.create().build();
           HttpPost post = new HttpPost(url);
           client.execute(post);
       }
   }
   

   使用HTTP GET请求发送数据读取请求，示例如下：

   import org.apache.http.client.HttpClient;
   import org.apache.http.client.methods.HttpGet;
   import org.apache.http.impl.client.HttpClientBuilder;
   
   public class IgniteRestApiExample {
   
       public static void main(String[] args) throws Exception {
           // 发送读取数据请求
           String url = "http://localhost:8080/ignite?cmd=get&cacheName=myCache&key=myKey";
           HttpClient client = HttpClientBuilder.create().build();
           HttpGet get = new HttpGet(url);
           HttpResponse response = client.execute(get);
           // 处理响应
       }
   }
   

3. 执行查询操作 使用HTTP POST请求发送查询请求，示例如下：

   import org.apache.http.client.HttpClient;
   import org.apache.http.client.methods.HttpPost;
   import org.apache.http.entity.StringEntity;
   import org.apache.http.impl.client.HttpClientBuilder;
   
   public class IgniteRestApiExample {
   
       public static void main(String[] args) throws Exception {
           // 发送查询请求
           String query = "SELECT * FROM Person";
           String url = "http://localhost:8080/ignite?cmd=qryexe&pageSize=10&qry=" + URLEncoder.encode(query, "UTF-8");
           HttpClient client = HttpClientBuilder.create().build();
           HttpPost post = new HttpPost(url);
           client.execute(post);
           // 处理响应
       }
   }
   

4. 管理缓存 使用HTTP POST请求发送管理缓存的请求，示例如下：

   import org.apache.http.client.HttpClient;
   import org.apache.http.client.methods.HttpPost;
   import org.apache.http.entity.StringEntity;
   import org.apache.http.impl.client.HttpClientBuilder;
   
   public class IgniteRestApiExample {
   
       public static void main(String[] args) throws Exception {
           // 创建缓存
           String url = "http://localhost:8080/ignite?cmd=cache&cacheName=myCache";
           HttpClient client = HttpClientBuilder.create().build();
           HttpPost post = new HttpPost(url);
           client.execute(post);
   
           // 销毁缓存
           String url = "http://localhost:8080/ignite?cmd=destroycache&cacheName=myCache";
           HttpClient client = HttpClientBuilder.create().build();
           HttpPost post = new HttpPost(url);
           client.execute(post);
       }
   }
   

请根据你的实际情况替换示例中的URL和其他参数，以便与你的Ignite集群进行交互。